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Control rods in nuclear reactors are made of materials that:
- Amplify neutrons
- Absorb neutrons
- Reflect neutrons
- Moderate neutrons
Answer: Absorb neutrons
Control rods (cadmium/boron) absorb excess neutrons to regulate fission chain reaction. Moderators (heavy water/graphite) slow neutrons. Essential for understanding nuclear energy. [[NCERT Physics Class 12]]